DE102009036171B4 - Process for the electrodeposition of a coating on a bipolar plate of a fuel cell - Google Patents
Process for the electrodeposition of a coating on a bipolar plate of a fuel cell Download PDFInfo
- Publication number
- DE102009036171B4 DE102009036171B4 DE102009036171.5A DE102009036171A DE102009036171B4 DE 102009036171 B4 DE102009036171 B4 DE 102009036171B4 DE 102009036171 A DE102009036171 A DE 102009036171A DE 102009036171 B4 DE102009036171 B4 DE 102009036171B4
- Authority
- DE
- Germany
- Prior art keywords
- substrate
- electrically conductive
- lands
- sponge
- webs
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/02—Tanks; Installations therefor
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/04—Electroplating with moving electrodes
- C25D5/06—Brush or pad plating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0223—Composites
- H01M8/0228—Composites in the form of layered or coated products
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/567—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of platinum group metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/62—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of gold
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/64—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of silver
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Composite Materials (AREA)
- Fuel Cell (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Verfahren, umfassend, dass: ein Substrat (30) für eine bipolare Platte einer Brennstoffzelle bereitgestellt wird, das eine erste Seite (31) besitzt, die ein Reaktionsgasströmungsfeld aufweist, das darin durch eine Vielzahl von Stegen (32) und zumindest einen Kanal (34) definiert ist, ein Behälter (12) bereitgestellt wird, von dem ein Schwamm (20), eine positive Elektrode (22) und eine Elektrolytlösung (24) aufgenommen sind, wobei der Schwamm (20) eine Fläche aufweist, die eine Vielzahl von darin definierten erhöhten Merkmalen (46) aufweist, die derart konstruiert und angeordnet sind, so dass die erhöhten Merkmale (46) mit einer Vielzahl erster Abschnitte (42) der Stege (32) des Substrats (30) zur Abscheidung einer elektrisch leitenden Beschichtung daran in Kontakt treten, wobei eine Vielzahl zweiter Abschnitte (44) der Stege (32) nicht mit dem Schwamm (20) in Kontakt treten, und die elektrisch leitende Beschichtung auf die Vielzahl erster Abschnitte (42) der Stege (32) selektiv galvanisiert wird, indem eine elektrische Spannung zwischen die positive Elektrode (22) und das Substrat (30) angelegt wird, wobei die Vielzahl zweiter Abschnitte (44) der Stege (32) durch die elektrisch leitende Beschichtung unbedeckt zurückbleibt.A method, comprising: providing a fuel cell bipolar plate substrate (30) having a first side (31) having a reaction gas flow field defined therein by a plurality of lands (32) and at least one channel (34 ), a container (12) is provided from which a sponge (20), a positive electrode (22) and an electrolyte solution (24) are received, the sponge (20) having a surface containing a plurality of therein defined raised features (46) constructed and arranged so that the raised features (46) are in contact with a plurality of first portions (42) of the lands (32) of the substrate (30) for depositing an electrically conductive coating thereon wherein a plurality of second portions (44) of the lands (32) do not contact the sponge (20), and the electrically conductive coating selectively contacts the plurality of first portions (42) of the lands (32) is galvanized by an electrical voltage between the positive electrode (22) and the substrate (30) is applied, wherein the plurality of second portions (44) of the webs (32) left uncovered by the electrically conductive coating.
Description
TECHNISCHES GEBIETTECHNICAL AREA
Die Erfindung bezieht sich auf ein Verfahren zur galvanischen Abscheidung einer Beschichtung auf eine bipolare Platte einer Brennstoffzelle.The invention relates to a method for the electrodeposition of a coating on a bipolar plate of a fuel cell.
HINTERGRUNDBACKGROUND
Bisher ist es bekannt gewesen, dass bipolare Platten für Brennstoffzellen zumindest einen Reaktionsgasströmungspfad aufweisen, der in einer Oberfläche einer bipolaren Platte durch eine Vielzahl von Stegen und zumindest einen Kanal definiert ist. Um einen Kontaktwiderstand zwischen einer Diffusionsmediumschicht und einer bipolaren Platte zu reduzieren, ist die den Reaktionsgasströmungspfad der bipolaren Platte definierende Oberfläche bisher mit Gold beschichtet worden.Heretofore, it has been known that bipolar plates for fuel cells have at least one reaction gas flow path defined in a surface of a bipolar plate by a plurality of lands and at least one channel. In order to reduce a contact resistance between a diffusion medium layer and a bipolar plate, the surface defining the reaction gas flow path of the bipolar plate has heretofore been coated with gold.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur galvanischen Abscheidung einer Beschichtung auf eine bipolare Platte einer Brennstoffzelle anzugeben, wodurch ein geringer Kontaktwiderstand der bipolaren Platte zu einer Diffusionsmediumschicht gewährleistet ist, zugleich sich die Beschichtung aber auch kostengünstig herstellen lässt.The invention has for its object to provide a method for the electrodeposition of a coating on a bipolar plate of a fuel cell, whereby a low contact resistance of the bipolar plate is ensured to a diffusion medium, at the same time, however, the coating can be produced inexpensively.
Herkömmliche Verfahren zur galvanischen Abscheidung einer Beschichtung sind aus den Druckschriften
ZUSAMMENFASSUNG DER ERFINDUNGSUMMARY OF THE INVENTION
Ein erfindungsgemäßes Verfahren umfasst, dass ein Substrat für eine bipolare Platte einer Brennstoffzelle bereitgestellt wird, das eine erste Seite besitzt, die ein Reaktionsgasströmungsfeld aufweist, das darin durch eine Vielzahl von Stegen und zumindest einen Kanal definiert ist. Ferner wird ein Behälter bereitgestellt, von dem ein Schwamm, eine positive Elektrode und eine Elektrolytlösung aufgenommen sind. Der Schwamm weist eine Fläche auf, die eine Vielzahl von darin definierten erhöhten Merkmalen aufweist, die derart konstruiert und angeordnet sind, so dass die erhöhten Merkmale mit einer Vielzahl erster Abschnitte der Stege des Substrats zur Abscheidung einer elektrisch leitenden Beschichtung daran in Kontakt treten, wobei eine Vielzahl zweiter Abschnitte der Stege nicht mit dem Schwamm in Kontakt treten. Die elektrisch leitende Beschichtung wird auf die Vielzahl erster Abschnitte der Stege selektiv galvanisiert, indem eine elektrische Spannung zwischen die positive Elektrode und das Substrat angelegt wird, wobei die Vielzahl zweiter Abschnitte der Stege durch die elektrisch leitende Beschichtung unbedeckt zurückbleibt.A method according to the invention comprises providing a substrate for a bipolar plate of a fuel cell having a first side having a reaction gas flow field defined therein by a plurality of lands and at least one channel. Further, a container is provided, from which a sponge, a positive electrode and an electrolyte solution are accommodated. The sponge has a surface having a plurality of elevated features defined therein and constructed and arranged such that the raised features contact a plurality of first portions of the webs of the substrate for deposition of an electrically conductive coating thereon a plurality of second portions of the webs do not contact the sponge. The electrically conductive coating is selectively plated on the plurality of first portions of the lands by applying an electrical voltage between the positive electrode and the substrate, leaving the plurality of second portions of the lands uncovered by the electrically conductive coating.
Andere beispielhafte Ausführungsformen der Erfindung werden aus der nachfolgenden detaillierten Beschreibung offensichtlich. Es sei zu verstehen, dass die detaillierte Beschreibung wie auch spezifische Beispiele, während sie beispielhafte Ausführungsformen der Erfindung offenbaren, nur zu Zwecken der Veranschaulichung dienen.Other exemplary embodiments of the invention will become apparent from the following detailed description. It should be understood that the detailed description as well as specific examples, while disclosing exemplary embodiments of the invention, are intended for purposes of illustration only.
KURZE BESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS
Beispielhafte Ausführungsformen werden aus der detaillierten Beschreibung und den begleitenden Zeichnungen besser verständlich, in welchen:Exemplary embodiments will be better understood from the detailed description and the accompanying drawings, in which:
DETAILLIERTE BESCHREIBUNG BEISPIELHAFTER AUSFÜHRUNGSFORMEN DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
Die folgende Beschreibung der Ausführungsform(en) ist lediglich beispielhafter (illustrativer) Natur.The following description of embodiment (s) is merely exemplary (illustrative) in nature.
Nun Bezug nehmend auf
Zumindest ein erstes Substrat
Nun Bezug nehmend auf
Bei einer Ausführungsform ist die elektrisch leitende Beschichtung eine Goldlegierung mit bis zu 90 Gew.-% Gold, wobei der Rest ein unedles Metall aufweist. Das unedle Metall kann Zink, Magnesium, Aluminium oder deren Mischungen sein. Bei einer Ausführungsform kann die Legierung eine reaktive Komponente aufweisen, und die reaktive Komponente kann in einer Säure, wie Schwefelsäure, oder einer Base, wie Natrium- oder Kaliumhydroxid, gelöst sein, wodurch Goldinseln auf den Stegen zurückbleiben. Die oben beschriebenen Konstruktionen können derart aufgebaut und angeordnet und betrieben werden, so dass weniger als 30% der Fläche der Stege galvanisiert sind.In one embodiment, the electrically conductive coating is a gold alloy with up to 90% by weight gold, the remainder comprising a base metal. The base metal may be zinc, magnesium, aluminum or mixtures thereof. In one embodiment, the alloy may have a reactive component, and the reactive component may be dissolved in an acid, such as sulfuric acid, or a base, such as sodium or potassium hydroxide, leaving gold islands on the lands. The structures described above may be constructed and arranged and operated such that less than 30% of the area of the lands is galvanized.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/188,486 | 2008-08-08 | ||
US12/188,486 US8246808B2 (en) | 2008-08-08 | 2008-08-08 | Selective electrochemical deposition of conductive coatings on fuel cell bipolar plates |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102009036171A1 DE102009036171A1 (en) | 2010-03-11 |
DE102009036171B4 true DE102009036171B4 (en) | 2015-10-22 |
Family
ID=41650948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009036171.5A Expired - Fee Related DE102009036171B4 (en) | 2008-08-08 | 2009-08-05 | Process for the electrodeposition of a coating on a bipolar plate of a fuel cell |
Country Status (3)
Country | Link |
---|---|
US (1) | US8246808B2 (en) |
CN (1) | CN101656319A (en) |
DE (1) | DE102009036171B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017118320A1 (en) * | 2017-08-11 | 2019-02-14 | Friedrich-Alexander-Universität Erlangen | Process for the production of components and components produced therefrom |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102005580B (en) * | 2010-11-03 | 2013-01-09 | 大连海事大学 | Surface-modifying treatment method of stainless steel bipolar plate of proton exchange membrane fuel cell |
US8778562B2 (en) * | 2012-06-11 | 2014-07-15 | GM Global Technology Operations LLC | Method of depositing durable thin gold coating on fuel cell bipolar plates |
US20130330638A1 (en) * | 2012-06-12 | 2013-12-12 | GM Global Technology Operations LLC | Coated substrate and product including the same and methods of making and using the same |
EP3063004B1 (en) * | 2013-11-01 | 2018-02-28 | Cryovac, Inc. | Delamination-resistant heat-shrinkable multilayer oxygen barrier film containing polyester |
US20160108534A1 (en) * | 2014-10-17 | 2016-04-21 | Ut-Battelle, Llc | Aluminum deposition devices and their use in spot electroplating of aluminum |
US10208391B2 (en) | 2014-10-17 | 2019-02-19 | Ut-Battelle, Llc | Aluminum trihalide-neutral ligand ionic liquids and their use in aluminum deposition |
US9774043B2 (en) * | 2015-08-31 | 2017-09-26 | Nano And Advanced Materials Institute Limited | Magnesium phosphate cement based bipolar plate composite material |
CN108123142B (en) | 2016-11-28 | 2022-01-04 | 财团法人工业技术研究院 | Corrosion-resistant structure and fuel cell comprising same |
DE102020212730A1 (en) | 2020-10-08 | 2022-04-14 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method for locally adjusting an electrical conductivity of an electrically conductive bipolar plate, bipolar plate and fuel cell stack |
CN112593264B (en) * | 2020-11-17 | 2022-03-01 | 东风汽车集团有限公司 | Method for repairing surface coating of metal bipolar plate |
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AT297435B (en) * | 1970-06-02 | 1972-03-27 | Eugen Duerrwaechter Dr Doduco | Device for continuous selective electroplating of strips |
DE3227878A1 (en) * | 1981-07-24 | 1983-02-10 | Inoue-Japax Research Inc., Yokohama, Kanagawa | METHOD AND DEVICE FOR GALVANIC DEPOSITING A METAL ONTO A WORKPIECE |
EP0203368B1 (en) * | 1985-05-02 | 1989-03-08 | Kurt Held | Method and apparatus for making copper-clad laminates |
EP0247541B1 (en) * | 1986-05-26 | 1990-10-24 | Siemens Aktiengesellschaft | Contact element for electrical switch contacts |
DE19758513C2 (en) * | 1997-02-06 | 2000-07-13 | Schempp & Decker Praezisionste | Device for the selective galvanic coating of electrical contact elements |
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DE102004009869A1 (en) * | 2004-02-26 | 2005-09-15 | Reinz-Dichtungs-Gmbh | Contact plate for fuel cells |
EP1753896B1 (en) * | 2004-05-04 | 2007-08-29 | OTB Oberflächentechnik in Berlin GmbH & Co. | Method and system for selectively coating or etching surfaces |
EP1678351B1 (en) * | 2003-10-16 | 2007-09-26 | OTB Oberflächentechnik in Berlin GmbH & Co. | Method and system for selectively coating metal surfaces |
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US8029943B2 (en) | 2005-02-28 | 2011-10-04 | GM Global Technology Operations LLC | Method to make conductive hydrophilic fuel cell elements |
US8017280B2 (en) * | 2005-07-13 | 2011-09-13 | GM Global Technology Operations LLC | Metal fluid distribution plate with an adhesion promoting layer and polymeric layer |
JP5205814B2 (en) * | 2006-08-09 | 2013-06-05 | 大同特殊鋼株式会社 | Metal separator for fuel cell and fuel cell using the same |
US8148035B2 (en) * | 2008-05-16 | 2012-04-03 | GM Global Technology Operations LLC | Bipolar plate coating architecture for fuel cells and methods of making and using the same |
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2008
- 2008-08-08 US US12/188,486 patent/US8246808B2/en not_active Expired - Fee Related
-
2009
- 2009-08-05 DE DE102009036171.5A patent/DE102009036171B4/en not_active Expired - Fee Related
- 2009-08-07 CN CN200910166995A patent/CN101656319A/en active Pending
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DE2010139A1 (en) * | 1970-03-04 | 1971-09-23 | Inovan Stroebe | Selective electro plating of metal strip |
AT297435B (en) * | 1970-06-02 | 1972-03-27 | Eugen Duerrwaechter Dr Doduco | Device for continuous selective electroplating of strips |
DE3227878A1 (en) * | 1981-07-24 | 1983-02-10 | Inoue-Japax Research Inc., Yokohama, Kanagawa | METHOD AND DEVICE FOR GALVANIC DEPOSITING A METAL ONTO A WORKPIECE |
EP0203368B1 (en) * | 1985-05-02 | 1989-03-08 | Kurt Held | Method and apparatus for making copper-clad laminates |
EP0247541B1 (en) * | 1986-05-26 | 1990-10-24 | Siemens Aktiengesellschaft | Contact element for electrical switch contacts |
DE19758513C2 (en) * | 1997-02-06 | 2000-07-13 | Schempp & Decker Praezisionste | Device for the selective galvanic coating of electrical contact elements |
EP1468127B1 (en) * | 2001-10-11 | 2005-05-04 | OTB Oberflächentechnik in Berlin GmbH & Co. | Method and system for selective electro-coating of the surfaces of metals |
EP1678351B1 (en) * | 2003-10-16 | 2007-09-26 | OTB Oberflächentechnik in Berlin GmbH & Co. | Method and system for selectively coating metal surfaces |
DE102004009869A1 (en) * | 2004-02-26 | 2005-09-15 | Reinz-Dichtungs-Gmbh | Contact plate for fuel cells |
EP1753896B1 (en) * | 2004-05-04 | 2007-08-29 | OTB Oberflächentechnik in Berlin GmbH & Co. | Method and system for selectively coating or etching surfaces |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102017118320A1 (en) * | 2017-08-11 | 2019-02-14 | Friedrich-Alexander-Universität Erlangen | Process for the production of components and components produced therefrom |
Also Published As
Publication number | Publication date |
---|---|
DE102009036171A1 (en) | 2010-03-11 |
CN101656319A (en) | 2010-02-24 |
US20100032306A1 (en) | 2010-02-11 |
US8246808B2 (en) | 2012-08-21 |
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